Research/Sitter/MAGNDATA / 1.62_CuO.mcif

CuO

MAGNDATA entry 1.62 · source

antiferromagnet

No net magnetisation, and up and down sublattices are related by a shift or by inversion, so the bands stay spin-degenerate: a conventional antiferromagnet.

Spin group ¹2/¹m × ²1: each symmetry marked ¹ keeps every spin, ² swaps up and down.

ordered ≤ 213 K (−60 °C)Colour: where that sits relative to 25 °C. Saturation: how much margin it has.

Structure · 11 properties

Magnetic group	P_a 2₁/c BNS 14.80
Point group	2/m1′
Parent space group	C 2/c No. 15
Spins	collinear · net moment 0 μ_B per cell
Propagation	[1/2 0 -1/2] 1k
Cell	a 9.354 · b 3.423 · c 10.252 Å · α 90° · β 99.72° · γ 90°
Transition	213 K (−60 °C)
Measured at	60 K
Magnetic ions	Cu
Largest moment component	0.65 μ_B
Method	SND

Symmetry

Stereogram of the magnetic point group: each operation applied to one direction. Filled = upper hemisphere, ring = lower; red operations include time reversal. Lines are mirrors; polygons are 2/3/4/6-fold axes; the centre ring is inversion.

Every structure in P_a 2₁/c →

Atom sites · 2 sites · CSV

site	element	x	y	z	m_a	m_b	m_c	\|m\| (μ_B)
Cu1	Cu	0.125	0.25	0	0	0.65	0	0.65
O1	O	0	0.4188	0.125

Moment components are along the crystal axes a, b, c (μ_B), as magCIF writes them. Symmetry generates the rest of the cell from these sites.

Source

J.B. Forsyth et al. J. Phys. C: Solid State Phys. (1988) · doi:10.1088/0022-3719/21/15/023

Cite the original paper and MAGNDATA, not this mirror.

Original file

⬇ 1.62_CuO.mcif from MAGNDATA · entry page

sha256 of this copy: 8e21cdae3b04b33977cad48980621a202d8e3aa70613759437fd4634bd7d2bbc
The mirror keeps the bytes Bilbao served, so the original should hash the same unless MAGNDATA has revised the entry since: shasum -a 256 1.62_CuO.mcif.